docs: update abbreviation

README.md

@@ -4,6 +4,8 @@
     <img src="assets/headerLight.svg" alt="BILIVE" />
   </picture>
 
+**B**ilibili **I**ntelligent **L**ive-**I**n **V**elocity **E**ngine
+
 *7 x 24 小时无人监守录制、渲染弹幕、识别字幕、自动切片、自动上传、兼容超低配机器，启动项目，人人都是录播员。*
 
 [:page_facing_up: English Documentation](https://timerring.github.io/bilive/) |